I just want to know if ALDEN is sending out DIFAX data or not. Neither thunder
nor lightning appear to be on the IDD.

The Alden Difax is gone. Alden is out of business. The Unidata Program Center
and the Unidata Users Committee, along with the community contributions are in
the process of exploring other options. You should join the difax@unidata
.ucar.edu email list to be updated on Difax information and recent exchanges.
You can subscribe at:
http://www.unidata.ucar.edu/mailinglist/mailing-list-form.html
You might want to check the Web page created by Jeff Weber for more Difax
information.
http://unidata.ucar.edu/community.difax.html
Linda